HOW DOES A BOOTY BAND WORK?
When you wear booty bands for free weight exercises like barbell squats, the booty band stimulates the muscles of the lower body, especially the glutes, causing better activation during these exercises. It essentially causes you to contract better by forcing pressure on your legs.
As for bodyweight exercises, the booty bands add resistance, making the movements harder. By increasing the difficulty and tension on your muscles, you will build muscle and strength.